AR2835: Islands in the Photosphere
Awash in a sea ofincandescent plasmaand anchored in strongmagnetic fields,sunspots are planet-sized dark islands inthe solar photosphere,the bright surface of the Sun.Found in solar active regions, sunspots lookdarkonly because they are slightly cooler though,with temperatures of about 4,000kelvinscompared to 6,000 kelvins for the surrounding solar surface.These sunspots lie in active region AR2835.
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